Air-Fluid Separator for PCV Gas Filtration
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Solution Overview
Problem
Internal combustion engines face challenges with carbon buildup on valves due to oil and fuel components in positive crankcase ventilation gases, leading to reduced engine efficiency and increased emissions.
Innovation Solution
An air-fluid separator device with uniquely designed separator components that use cyclonic separation and filter assemblies to remove contaminants like oil, water, and carbon particles from air before it is reused in the engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If direct fuel injection is used to improve fuel efficiency, then fuel efficiency is improved, but carbon buildup on valves occurs due to oil and fuel components in PCV gases
Solution Approach 1:
The separator performs preliminary action by removing oil and fuel components from PCV gases before they enter the combustion chamber. The cyclonic separator and filter assembly pre-treat the gases, preventing carbon buildup on valves before it occurs during combustion.
Solution Approach 2:
The separator device acts as an intermediary between the crankcase and combustion chamber. It mediates the PCV gas flow by separating contaminants from the gases, allowing only cleaned gases to reach the combustion chamber, thus protecting the valves from carbon buildup.
2Object-generated harmful factors
If indirect and direct fuel injectors are provided to reduce carbon buildup, then carbon buildup is reduced, but device complexity and cost increase
Solution Approach 1:
The separator extracts and removes the harmful oil and fuel components from PCV gases before they reach the combustion chamber. By taking out the contaminants at the source, the patent eliminates the need for additional fuel injectors and complex control systems that would otherwise be required to mitigate carbon buildup.
3Ease of manufacture
If screen is used in oil and air separator to hold filter material, then filter material is supported, but oil may flow along screen pathway into exhaust
Solution Approach 1:
The patent uses a screen as a structural support that copies the function of holding filter material without replicating the filtering function itself. The screen provides mechanical support while the filter material performs the actual filtration, allowing oil to be captured without creating pathways to the exhaust.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The air-fluid separator effectively reduces carbon buildup on engine valves, improves engine efficiency, and decreases emissions by ensuring cleaner air is recirculated into the engine.
Implementation Method 1
The housing includes an inlet port configured to receive incoming air and direct the incoming air to rotationally flow within a cyclonic separator of the housing
Implementation Method 2
cause incoming untreated and potentially contaminated air to rotationally flow within the separation chamber of the housing and induce separation of contaminants from air
Implementation Method 3
The housing further includes a filter assembly positioned below the cyclonic separator and configured to receive deposited contaminants from the cyclonic separator while allowing air to pass through the filter assembly
Implementation Method 4
The housing further includes a drain funnel positioned below the filter assembly and configured to collect contaminant deposits received from the filter assembly and direct the contaminant deposits into a collection reservoir
Data Source
AI summary
The disclosure relates generally to an air-fluid separator device comprising a plurality of uniquely designed separator components cooperatively arranged to define a pathway through which untreated and potentially contaminated air flows and undergoes treatment in which contaminants, which may be in the form of fluid-based contaminants, are removed from the air before the air is reused (e.g., returned to an intake manifold of an engine). The contaminants may include, but are not limited to, water, oil, carbon particles, and unburned fuel, for example.